nfc: llcp: Fix use-after-free race in nfc_llcp_recv_cc() (Linux Linux)

CVE-2026-64010
HIGH 8.8

En bref

Source
NVD
EPSS
EPSS 0.20 % · centile 9 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: Fix use-after-free race in nfc_llcp_recv_cc() A race condition exists in the NFC LLCP connection state machine where the connection acceptance packet (CC) can be processed concurrently with socket release. This can lead to a use-after-free of the socket object. When nfc_llcp_recv_cc() moves the socket from the connecting_sockets list to the sockets list, it does so without holding the socket lock. If llcp_sock_release() is executing concurrently, it might have already unlinked the socket and dropped its references, which can result in nfc_llcp_recv_cc() linking a freed socket into the live list. Fix this by holding lock_sock() during the state transition and list movement in nfc_llcp_recv_cc(). After acquiring the lock, check if the socket is still hashed to ensure it hasn't already been unlinked and marked for destruction by the release path. This aligns the locking pattern with recv_hdlc() and recv_disc().

Faiblesses (CWE)

  • CWE-362 — Situation de compétition
  • CWE-416 — Utilisation après libération

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected a69f32af86e389dd232b1bb2269e202c1bfcc60f < dce85215a6c7b0fd753f577a4c487f647119884c ; affected a69f32af86e389dd232b1bb2269e202c1bfcc60f < bd08bb7443c501d2f2a71d529e4afcf11c9b07d2 ; affected a69f32af86e389dd232b1bb2269e202c1bfcc60f < 0b45c31746e1523d5d482fda8fcf54a35ac417f1 ; affected a69f32af86e389dd232b1bb2269e202c1bfcc60f < ee2d1a8a1833c5e56e9a1745e64b0b4edda732c2 ; affected a69f32af86e389dd232b1bb2269e202c1bfcc60f < ad8a27d63cac96bac441edd002209ebd996e12fb ; affected a69f32af86e389dd232b1bb2269e202c1bfcc60f < 650bdd8fdfab64a09ee474150313dbc48c374795
Linux · Linuxaffected 3.6 ; unaffected 0 < 3.6 ; unaffected 5.10.259 ≤ 5.10.* ; unaffected 5.15.210 ≤ 5.15.* ; unaffected 6.1.176 ≤ 6.1.* ; unaffected 6.6.143 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD